1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a39e403de27ac310b3a51dbf080acbb00e03f21c0a827cae680904a287dcd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db9b4268-007f-4ac7-93e6-61053e14e7da.json and https://artists.proofprofile.net/proofs/artist/db9b4268-007f-4ac7-93e6-61053e14e7da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cbd635fdc1e54fdfeef0290032ac2e4b8909bfeb917f086646824a33cb6d8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2519762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a62032ffbb239c2d428a5538de0b414750fbed22176aca1102fc92840600f31. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2432669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b79b1540c1fc5d5459948684663bc49571450d301ad1895cf0e5b1a4f273b1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ8A2376334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882962e4fe2bd7bdcf8eea1770e97464edc95a862d560a993e242028b73ae80c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWV32322104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98c090669b718c4adf9dc5df91af6c70c43cd404485d2a42d20919ce78a0c44. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2327850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d88157ea0a1bac921d2507c1a256a9504d46f69ef09de3c117ed2b343f2664. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDD2277503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd290633c48abfdf657f327b3d1b0b8fc59cda2374ea82b50191e10cf9964792e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2267831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891762fc0b7cbf07c3bd0725488ac6ad012df10ceb2e34bcc69921f220e03256. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2293593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a452ffe0765b2898c3f1598359d0ba5e096f83e4ca631ce562e6beae717b60. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2127449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfbf832c79d19f1b77d1b92b97da1320b6cda5b4d57743e346f9d3940da4b99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2127451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7649052bb3c198acd93f3bedf4d09d14b80b5ee72a8608b1ac60c26fbf7a79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2135309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6bdfdcad056813b967cf21d9b3c39ace301e8899670c8ea8a169f1c8cbd20f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2143504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc15f52d2b7318325d4ce083d56d824c16206586cc68978e99df3cb0b618fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2143499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcadf993804032ba06533675c6f005c9b31025ea94d0fff83bcfeed1ca51a65. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2159070.
Lilly's Song EP (Lilly's Song Original mix & Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679987011f06f8b42f3948c7d52af4517179547042fbd995bfd7a49f205dd30b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2119776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa0f9cc5ec242f85c659e947c880bf75528d17195e8d4b2941c5f209eac47fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2087586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a23f9a050c142ca84cf0bffa60dc37cbc49ab4d5950e7d03aaf267467513d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2073704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c9ed2a3442ee211a16e73c3365e186e323c5ee93ddbb9efe7912600f989afd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2566737.